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+//========================================================================
+//
+// CMap.h
+//
+// Copyright 2001-2003 Glyph & Cog, LLC
+//
+//========================================================================
+
+#ifndef CMAP_H
+#define CMAP_H
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma interface
+#endif
+
+#include "gtypes.h"
+#include "CharTypes.h"
+
+#if MULTITHREADED
+#include "GMutex.h"
+#endif
+
+class GString;
+struct CMapVectorEntry;
+class CMapCache;
+
+//------------------------------------------------------------------------
+
+class CMap {
+public:
+
+ // Create the CMap specified by <collection> and <cMapName>. Sets
+ // the initial reference count to 1. Returns NULL on failure.
+ static CMap *parse(CMapCache *cache, GString *collectionA,
+ GString *cMapNameA);
+
+ ~CMap();
+
+ void incRefCnt();
+ void decRefCnt();
+
+ // Return collection name (<registry>-<ordering>).
+ GString *getCollection() { return collection; }
+
+ // Return true if this CMap matches the specified <collectionA>, and
+ // <cMapNameA>.
+ GBool match(GString *collectionA, GString *cMapNameA);
+
+ // Return the CID corresponding to the character code starting at
+ // <s>, which contains <len> bytes. Sets *<nUsed> to the number of
+ // bytes used by the char code.
+ CID getCID(char *s, int len, int *nUsed);
+
+ // Return the writing mode (0=horizontal, 1=vertical).
+ int getWMode() { return wMode; }
+
+private:
+
+ CMap(GString *collectionA, GString *cMapNameA);
+ CMap(GString *collectionA, GString *cMapNameA, int wModeA);
+ void useCMap(CMapCache *cache, char *useName);
+ void copyVector(CMapVectorEntry *dest, CMapVectorEntry *src);
+ void addCodeSpace(CMapVectorEntry *vec, Guint start, Guint end,
+ Guint nBytes);
+ void addCIDs(Guint start, Guint end, Guint nBytes, CID firstCID);
+ void freeCMapVector(CMapVectorEntry *vec);
+
+ GString *collection;
+ GString *cMapName;
+ int wMode; // writing mode (0=horizontal, 1=vertical)
+ CMapVectorEntry *vector; // vector for first byte (NULL for
+ // identity CMap)
+ int refCnt;
+#if MULTITHREADED
+ GMutex mutex;
+#endif
+};
+
+//------------------------------------------------------------------------
+
+#define cMapCacheSize 4
+
+class CMapCache {
+public:
+
+ CMapCache();
+ ~CMapCache();
+
+ // Get the <cMapName> CMap for the specified character collection.
+ // Increments its reference count; there will be one reference for
+ // the cache plus one for the caller of this function. Returns NULL
+ // on failure.
+ CMap *getCMap(GString *collection, GString *cMapName);
+
+private:
+
+ CMap *cache[cMapCacheSize];
+};
+
+#endif